So, one of the projects my son had been working on was the pistol from this game. (photos attached). It is 100% ABS to actually take advantage if the warping at the edges to make it look more worn. The inside is stuffed with wiring and boards. There is an Arduino that handles the sounds and laser pointer 'beam' weapon the battery cases actually are dummy, but must be inserted to activate it. The 'scope' on top is a microduino with an LED shield that actually changes patterns (patterns selected by knob on rear of gun). The two arduinos talk to each other via the I/O bus as needed to synchronize behaviors. He did a good job painting it as well. The sounds are actually captured WAVs from the game so it is as realistic as it can be. He has a lot of various stickers to put on the case and it will get weathered/aged as well.